Understanding and Working with RSLogix 5000 Firmware 20.12: A Comprehensive Guide
In the world of industrial automation, Rockwell Automation's RSLogix 5000 software has been a cornerstone for programming and managing ControlLogix and CompactLogix programmable logic controllers (PLCs). The software's capabilities are significantly enhanced with the introduction of various firmware versions, each bringing its own set of features, improvements, and compatibility updates. One such firmware version that has garnered attention is the RSLogix 5000 firmware 20.12. This article aims to provide a detailed overview of the RSLogix 5000 firmware 20.12, including its features, benefits, and considerations for implementation.
Introduction to RSLogix 5000
RSLogix 5000 is a powerful software tool designed for the development of control applications on Rockwell Automation's Logix5000 family of controllers. These controllers are widely used in industrial settings for their reliability, flexibility, and performance. The software supports a range of programming languages, including Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), and Sequential Function Chart (SFC), offering flexibility for various control applications.
Overview of Firmware 20.12
The RSLogix 5000 firmware version 20.12 represents a significant update to the software, offering enhanced functionalities, improved performance, and better compatibility with other Rockwell Automation products. This firmware version is designed to work seamlessly with the Logix5000 controllers, providing support for advanced control strategies, safety applications, and communication protocols.
Key Features of RSLogix 5000 Firmware 20.12
Enhanced Security Features: Firmware 20.12 includes improved security measures to protect against unauthorized access and ensure the integrity of control applications. This includes enhanced password protection, role-based access control, and improved data encryption.
Improved Performance and Efficiency: The firmware offers optimized execution of control code, leading to faster scan times and more efficient use of controller resources. This can result in improved productivity and reduced downtime.
Advanced Diagnostic Capabilities: With firmware 20.12, users benefit from enhanced diagnostic tools and features, making it easier to identify and troubleshoot issues. This includes more detailed error messages, improved debugging capabilities, and enhanced monitoring of controller and I/O performance.
Expanded Communication and Interoperability: The firmware supports a wide range of communication protocols, facilitating seamless integration with other Rockwell Automation products and third-party devices. This enables more flexible and scalable control system architectures.
Support for Safety Applications: Firmware 20.12 includes features and functions specifically designed to support safety applications, such as integrated safety controllers and safety communication protocols. This allows for the implementation of safety control strategies that are fully integrated with the control system.
Benefits of Upgrading to Firmware 20.12
Upgrading to RSLogix 5000 firmware 20.12 can offer several benefits, including:
Considerations for Implementation
While upgrading to firmware 20.12 offers several advantages, there are also considerations to keep in mind:
Conclusion
The RSLogix 5000 firmware 20.12 represents a significant advancement in the capabilities and performance of Rockwell Automation's Logix5000 controllers. With its enhanced security features, improved performance, and advanced diagnostic capabilities, this firmware version offers substantial benefits for industrial automation applications. However, successful implementation requires careful planning, testing, and consideration of compatibility and system requirements. By understanding the features and benefits of firmware 20.12, users can make informed decisions about upgrading their control systems and taking full advantage of the latest technologies in industrial automation.
RSLogix 5000 firmware is a critical maintenance release for the Logix 5000 controller platform, specifically designed to address significant security vulnerabilities and functional anomalies. Rockwell Automation Critical Version Numbering Note
A common point of confusion is the difference between how the version is displayed in software versus the Product Compatibility and Download Center (PCDC) Firmware v20.012 (as seen in PCDC) is the exact same as when viewed in the Controller Properties of RSLogix 5000. Rockwell Automation Key Features & Improvements Security Patches:
This version addresses a vulnerability that could allow attackers to cause a Denial of Service (DoS)
or potentially alter the controller's operating state via a buffer overflow. Motion Control Fixes:
It corrects issues where axes (both SERCOS and CIP Drive types) would not allow motor feedback or marker tests while in certain safety or inhibit states. Drive ADC Stability: Resolves an anomaly where controllers using Automatic Drive Configuration (ADC)
with PowerFlex 750 drives could become stuck when transitioning to "Run" mode. SD Card Reliability:
Corrects a "Major Fault" condition that could be triggered simply by the presence, absence, or insertion of a Secure Digital (SD) card Rockwell Automation Important Compatibility & Usage Warnings Software Pairing: rslogix 5000 firmware 20.12
While v20.012 is a firmware revision, it was primarily released to be used with RSLogix 5000 v20.01 . However, using v20.00 software with v20.012 firmware strongly discouraged
, as it can lead to "unknown" major recoverable faults if an index-out-of-range error occurs. Safety AOI Changes:
Downloading a project to a controller with this firmware may change the signature for Safety Add-On Instructions (AOIs) , requiring them to be revalidated after the download. Restoring Compatibility:
For users managing multiple version 20 projects, Rockwell released v20.04 software to restore minor revision compatibility
, allowing a single workstation to easily access files originally created in v20.01 or v20.03. Rockwell Automation Upgrade Path Requirements
RSLogix 5000 version 20.12 is a significant firmware release from Rockwell Automation, primarily known for being one of the final stable revisions of the RSLogix 5000 brand before it transitioned to the Studio 5000 Logix Designer name at version 21. Key Functions and Role
RSLogix 5000 v20.12 serves as the programming environment for ControlLogix and CompactLogix PACs (Programmable Automation Controllers). It is often maintained in industrial environments to support "legacy" hardware that does not support the higher resource requirements of the newer Studio 5000 versions.
Project Compatibility: It is the standard for projects using version 20 firmware on the controller.
Hardware Support: This version is widely used with 1756-L6x and early 1756-L7x ControlLogix controllers, as well as several 1769 CompactLogix models.
Transition Point: V20 is the highest version supported by many older "Standard" series controllers (like the L61) that lack the memory or architecture to run V21 or higher. Installation and Operating Systems
According to Rockwell Automation compatibility notes, RSLogix 5000 version 20 is compatible with several older and modern operating systems: Windows 10 Professional (64-bit): Version 1703 and later. Windows 7 Professional (64-bit): Service Pack 1.
Virtual Environments: It is commonly deployed in VMware or Hyper-V virtual machines to isolate its specific .NET and dependency requirements from newer software versions. Maintenance & Firmware Management Understanding and Working with RSLogix 5000 Firmware 20
Updating a controller to or from version 20.12 involves specific steps using the ControlFlash utility:
Viewing Revision: You can verify the current firmware of a connected PLC by expanding the communication path in RSLinx.
Changing Versions: To move a project to a different version, you must right-click the controller in the project tree, select "Properties," and use the "Change Controller" button to adjust the software revision.
Risks: Note that changing versions can sometimes cause issues with Add-On Instructions (AOIs) that were built on different versions. Why Version 20.12 specifically?
While many users simply refer to "Version 20," the minor revision .12 typically includes stability patches and security bug fixes over the original 20.01 release. It is generally recommended to use the latest minor revision (like 20.12 or 20.15) to ensure compatibility with newer Windows security updates.
You can use this for a knowledge base article, a safety alert, a training memo, or a blog post.
Many pharmaceutical, oil & gas, and automotive plants validated their processes using RSLogix 5000. Changing firmware would require re-validation—a costly and time-consuming process. 20.12 offers a known, stable endpoint for these validated systems.
Do not deploy new projects on RSLogix 5000 v20.12 today.
"20.12 is a museum piece – a very stable, reliable museum piece, but one that belongs behind a locked VM and an air gap."
When creating a new project:
If you open an older v20.01–20.11 project, RSLogix will prompt to convert to 20.12 (recommended). No logic changes needed.